USB2230 SMSC Corporation, USB2230 Datasheet - Page 20

• Manufacturer Part Number: USB2230
• Description: (USB2229 / USB2230) 5th Generation Hi-Speed USB Flash Media and IrDA Controller
• Manufacturer: SMSC Corporation

Revision 1.3 (02-13-06)
6.2
IR Transmit Data or
IR Receive Data or
Voltage Regulator
1.8v Digital Core
3.3v Power & &
UART RX
IR MODE
UART TX
BUFFER
Ground
NAME
Power
I/O8PU
I/O8PD
Input
O8PU
O8PD
ICLKx
I/O8
IPU
IPD
O8
IS
I
Notes:
Buffer Type Descriptions
Hot-insertion capable card connectors are required for all flash media. It is required for SD
connector to have Write Protect switch. This allows the chip to detect MMC card.
nMCE is normally asserted except when the 8051 is in standby mode.
Input with internal weak pull-up resistor.
Input with internal weak pull-down resistor.
Input/Output buffer with 8mA sink and 8mA source.
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-down
XTAL clock input
Input
Input with Schmitt trigger
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
resistor.
Output buffer with 8mA sink and 8mA source.
Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
Output buffer with 8mA sink and 8mA source, with an internal weak pull-down resistor.
IR_RXD/RX
IR_TXD/TX
IR_MODE
SYMBOL
Table 6.2 USB2229/USB2230 Buffer Type Descriptions
VDD18
VDD33
VSS
DIGITAL POWER, GROUNDS, and NO CONNECTS
Table 6.1 USB2229/USB2230 Pin Descriptions
5th Generation Hi-Speed USB Flash Media and IrDA Controller with Integrated Card Power FETs
BUFFER
TYPE
O8
O8
DATASHEET
I
IrDA
20
IR_MODE, declares the operating speed of the IR link.
IR_RXD, can be used as IR receiver or as the UART
RX line.
IR_TXD, can be used as IR transmitter or as the UART
TX line.
+1.8V Core power
All VDD18 pins must be connected together on the
circuit board.
3.3V Power & Regulator Input.
Pins 100 & 108 supply 3.3V power to the internal 1.8V
regulators.
Ground Reference
DESCRIPTION
DESCRIPTION
SMSC USB2229/USB2230
Datasheet